KR100792155B1 - Electrode of ribbon heater for sub heater and manufacturing method thereof - Google Patents

Abstract

A structure of an electrode of a ribbon heater for an auxiliary heater, and a method for manufacturing the same are provided to reduce thickness of a heating element to reduce ventilation resistance and maximize an aperture area, and design complex shapes of the heating element while continuously producing the heating element. A ribbon heater for an auxiliary heating apparatus has heat radiating fins combined with both sides of a heating element(50), and electrodes(50a,50b) formed at both ends of the heating element and the heat radiating fins in a length direction. The heating element is a ribbon heating element formed by coating an insulator(54) on an outer surface of a ribbon-shaped amorphous metal alloy(52). The electrodes are formed at both ends of the ribbon heating element by joining a conductive heat radiating material(53) with the outer surface of the ribbon-shaped amorphous metal alloy to prevent generation of hot spots due to shortage of heat radiation. The insulator is coated on the electrode except an end to which an electrode terminal is contacted.

Description

Electrode Structure of Ribbon Heater for Auxiliary Heating System and Electrode Manufacturing Method

1 is a perspective view of an auxiliary heating apparatus having a conventional planar heating element,

Figure 2 is a perspective view showing a ribbon heater for an auxiliary heating device to which the present invention is applied,

3 is a cut perspective view of the ribbon heating element of FIG. 2;

4 is a detailed view showing the arrangement of the ribbon heating element and the corrugated fin of the present invention;

5 is a detailed view showing another example of the arrangement of the ribbon heating element and the corrugated fin of the present invention;

6 is a configuration diagram showing an example of the electrode formation state of the electrode of the ribbon heater of the present invention (electrode terminal and terminal support is omitted),

Figure 7 (a) to (c) is a process configuration diagram for the electrode manufacturing method of the ribbon heater of the present invention,

8 is a perspective view showing the electrode structure of the ribbon heater of the present invention;

9 is a sectional view showing another example of the electrode structure of the ribbon heater of the present invention;

10 is a cross-sectional view of the electrode terminal and the terminal support portion coupled to the electrode of the ribbon heater of the present invention;

FIG. 11 is a cross-sectional view of the terminal support part, the electrode terminal, and the ribbon heating element of FIG.

<Explanation of symbols for the main parts of the drawings>

50: ribbon heating element 50a, 50b: electrode

52: amorphous metal alloy 53: conductive heat insulating material

54: insulation material 60: corrugated pin

62: flat portion 63: opening

64: inclined portion 70: terminal support portion

72: electrode terminal

The present invention relates to an electrode structure and an electrode manufacturing method of a ribbon heater for an auxiliary heating device.

In general, a vehicle is provided with an air conditioner for heating or cooling the room, and evenly transports cold and warm air to each part of the vehicle through the ventilation system and the ventilation passage. That is, in the air conditioner of the vehicle, the cold air generated in the evaporator of the air conditioner, or the warm air generated in the engine is transferred to the interior of the vehicle to cool or heat.

In the case of cooling to lower the indoor temperature, such as in summer, the air conditioner is operated to discharge cold air.In the case of heating to increase the temperature of the interior, such as winter, the cooling water heated by circulating the engine is blown through a blower to prevent the engine from overheating. Heat exchange with the outside air supplied to the to supply the warmth through the discharge holes are arranged in various places in the vehicle.

Heat generated from the engine is generated as fuel is burned in the cylinder, and the temperature of the combustion gas generated at this time is about 2000 ° C to 2500 ° C, which damages components constituting the engine. The temperature of the engine is maintained at about 80 ° C to 90 ° C by the temperature, that is, the circulation of the cooling water.

Although it is preferable to efficiently heat the room by using the coolant heat exchanged with the engine, it is possible to heat the interior of the vehicle by using the heated coolant only after the time until the engine is heated after the initial start-up. For this reason, in winter, the engine is idling for a long time before driving in order to immediately heat the boarding, which causes inconvenience due to environmental pollution, fuel consumption and vehicle noise.

Therefore, an auxiliary heating apparatus is disclosed in which warm air is formed in an auxiliary heater made of a hot wire coil and blown to a room before the cooling water is heated. However, the auxiliary heater method using a heating coil has a problem that the heating effect of the heating coil is large, the heating effect is large, but the risk of fire is high, the life of the heating wire is short, and the parts of the heating coil must be frequently repaired and replaced.

Therefore, research on new devices that replace heating means such as heating coils as described above has been actively conducted, and has a constant resistance thermistor (PTC) having a constant resistance temperature coefficient that can be used semi-permanently due to a low risk of fire and a long life. Device: Positive Temperature Coefficient Thermister is widely known.

Auxiliary heating apparatus using a PTC element is disclosed in Korea Patent Nos. 10-0479187, 10-0474094, 10-0576371 and the like. The PTC device is a static thermistor having a constant resistance temperature coefficient made by mixing tin, cerium, and the like in a barium titanate-based semiconductor by about 0.1% as the temperature increases, and the resistance value varies with the ambient temperature. Therefore, it is an economical and efficient sensor-type heating element that generates high heat at low temperatures and low heat again at high temperatures. It has automatic temperature control and automatic protection from overheating and overvoltage. In addition, there is a characteristic that does not generate an oxidizing gas that causes air pollution because it does not react with oxygen in the air.

However, the auxiliary heating device using the PTC element as disclosed in the above-described Korean Patent Nos. 10-0479187, 10-0474094, 10-0576371, etc., has a limit in increasing the size of the PTC element, so that a larger amount of heat is generated. Since each conductive carbon mixture is bonded only to a part of the heat sink, the temperature distribution is uneven for each heat sink, and the temperature transmitted to each heat sink is different.The PTC element sinters and solidifies the PTC raw powder to form an electrode member. Since the manufacturing process and assembly process are complicated and each part is densely packed, the ventilation resistance increases during blowing, and the PTC element has the characteristic that the initial inrush current increases as the temperature rises. When used at high temperature, the inrush current is increased to exceed the capacity of the battery (100 ~ 120A), the car battery is discharged there was.

In order to solve this problem, an auxiliary heating device having a planar heating element is disclosed in Korean Laid-Open Patent No. 2006-0021428. The Korean Laid-Open Patent Publication No. 2006-0021428, as shown in Figure 1, a plurality of planar heating element 10 for generating heat to which a current is applied, and the electrode terminal 20 coupled to the planar heating element to apply a current ) And a heat dissipation fin 30 coupled between the planar heating element 10 to easily release heat generated from the planar heating element 10 to the outside.

The planar heating element 10 is positioned to be spaced apart at regular intervals in the longitudinal direction, and is coupled to the plate-shaped conductive carbon mixture 11 formed long in the transverse direction, and the top and bottom surfaces of the conductive carbon mixture 11. It consists of a pair of insulating sheets 12 to be. The conductive carbon mixture 11 is a mixture containing an electric resistive material in a mixture of carbon black charcoal powder, graphite powder, an organic insulator compound, and a ceramic bonding material, and generates heat as a current flows therein.

By the way, the auxiliary heater having a PTC element or a planar heating element using the conductive carbon mixture has a problem that the lack of flexibility, continuous production is impossible, the manufacturing process is complicated, expensive, and the design of a complex shape is impossible.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to provide a ribbon heater for auxiliary heating apparatus that can be designed and continuous production of a complex shape, simplify the electrode manufacturing process and reduce the manufacturing cost It is to provide an electrode structure and electrode manufacturing method.

The electrode structure of the ribbon heater for an auxiliary heating apparatus according to the present invention, the heat radiating fins are bonded to the both sides of the heating element is laminated, the auxiliary heating apparatus heater in which the electrode is formed in at least one end in the longitudinal direction of the heating element, the heating element The ribbon is a ribbon heating element coated with an insulating material on the outer surface of the amorphous metal alloy of the ribbon type, and the conductive heat dissipating material is bonded to the outer surface of the amorphous metal alloy to prevent the hot spots due to lack of heat radiation to the end of the ribbon heating element is bonded electrode It is formed, the electrode is characterized in that the insulating material is coated leaving the end portion in contact with the electrode terminal.

In the method of manufacturing an electrode of a ribbon heater for an auxiliary heating device according to the present invention, heat dissipation fins are laminated on both sides of a ribbon heating element, and an electrode is formed on at least one end in a length direction of the ribbon heating element and the heat dissipation fin, and an electrode terminal is provided on the electrode. In the ribbon heater for the auxiliary heating apparatus is coupled, the outer surface of the continuous amorphous metal alloy in the form of a ribbon, after bonding the conductive heat insulating material at the length interval of the heater to be manufactured, the outer surface and the conductive heat radiating material is bonded to the outer surface After manufacturing the continuous raw material by coating an insulating material on the outer surface, and then cutting the middle of the conductive heat dissipating material from the continuous raw material to prepare a base material, the end of the electrode terminal by removing the coated insulating material on the end of the base material It forms a part.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

Figure 2 is a perspective view showing an example of a ribbon heater for an auxiliary heating apparatus to which the present invention is applied, showing a structure in which two ribbon heating elements are stacked. As shown, the both sides of the ribbon heating element 50, the corrugated fin 60, which acts as a heat radiating fin is coupled and stacked on both sides of the ribbon heating element 50, both sides of the ribbon heating element 50 and the corrugated fin 60 in the longitudinal direction Terminal support parts 70 and 70 are coupled to each other, and the terminal support part 70 is coupled to an electrode terminal 74 in contact with an electrode described later of the ribbon heating element 50. And, the last laminated corrugated pin 60 is coupled to the closing plate 74 that serves as a support and heat dissipation. The ribbon heating element 50 and the corrugated fin 60 and the closing plate 74 is fixed by a coupler or an adhesive (not shown).

As shown in FIG. 3, the ribbon heating element 50 has a structure in which an insulating material 54 is coated on an outer surface of an amorphous metal alloy 52 in the form of a ribbon.

The amorphous metallic alloy 52 has a very high ductility and elongation and a short heating time, 89 to 96 wt% of iron (Fe), 2 to 4 wt% of boron (B), and silicon (Si). ) 2 to 7% by weight, and a small amount of chromium (Cr), cobalt (Co) and molybdenum (Mo) may be added as necessary. The amorphous metal alloy is a material prepared by supercooling the liquid at a rate (million degrees / second) at which the atoms do not have time to arrange the atoms, and has an amorphous, amorphous, and glass state.

The insulating material 54 is a known polymer, PET (C-PET, A-PET), PVC, PTFE, Silicone, polyamide-based heat-resistant polymer may be used. As an example, when PET is used, its use temperature ranges from -60 ° C to 150 ° C (up to 250 ° C for C-PET) and its value varies depending on the crystal area, but its glass transition temperature (Tc) is about It is 70 degreeC, and its melting point (Tm) is about 250 degreeC.

The ribbon heating element 50 can reduce the thickness of the heating element to lower the ventilation resistance while maximizing the opening area, and it is possible to design and continuously produce a complicated shape.

As shown in FIG. 4, the corrugated fin 60 has flat portions 62 zigzag on both sides in a height direction, and opposite sides of the flat portions 62 are narrower than the width of the flat portions 62. The opening 63 opened in the width is formed, and the flat portions 62 on both sides are connected to the inclined portion 64. On both sides of the ribbon heating element 50, the flat portion 62 of the corrugated fin 60 is alternately in close contact with each other, and this arrangement makes the heat generation of the ribbon heating element 50 uniform and thus hot spots (hot) spot: prevents the local concentration of heat) to increase the life of the ribbon heating element (50).

Further, the flat portions 62 and 62 of the adjacent corrugated fins 60 and 60 arranged between the ribbon heating elements 50 and 50 are also brought into close contact with each other (part A of FIG. 4). The arrangement is simple in structure and manufacturing because adjacent corrugated pins 60 and 60 are in contact with each other to maintain rigidity without a separate support plate.

On the other hand, Figure 5 shows a corrugated pin 160 of another embodiment of the present invention. In the corrugated fin 160 of the embodiment of FIG. 4, the adjacent flat portions 162 in the longitudinal direction are almost close, so that the openings 163 are hardly generated, and the inclination of the inclined portion 164 in the embodiment of FIG. It is high. Therefore, the heat dissipation performance of the corrugated fin 160 is higher, the support force of the ribbon heating element 50 is increased, and the support force between the corrugated fins in close contact is increased (see part B of FIG. 5) to further increase the rigidity of the ribbon heater. It works.

6 is a configuration diagram showing an example of the electrode formation state of the electrode of the ribbon heater in a structure in which the corrugated fin 160 of the embodiment of FIG. 5 is stacked in close contact with both sides of the ribbon heating element 50 (electrode terminal and The terminal support part is omitted), and the electrode 50a and the electrode 50b are formed on both sides of the ribbon heating element 50 in the longitudinal direction, respectively.

Electrodes 50a and 50b are formed on the electrodes 50a and 50b by bonding a conductive heat dissipation member 53 such as copper foil to prevent hot spots due to insufficient heat dissipation. The insulating material 54 is coated on the electrodes 50a and 50b, leaving an end portion where the electrode terminal 72 contacts. The conductive heat dissipating member 53 is made of an adhesive foil and adhered or coated to form the electrodes 50a and 50b.

In FIG. 6, although the electrodes are formed on both sides of the ribbon heating element 50 in the longitudinal direction, the ribbon heating element 50 may be connected to each other to form an electrode only on the other side. In this case, the conductive heat dissipating material such as copper foil is bonded to the portion where the ribbon heat-generating element is connected so that a hot spot due to insufficient heat dissipation does not occur.

Figure 7 (a) to (c) is a process configuration diagram for the electrode manufacturing method of the ribbon heater of the present invention, the heat radiation fin (coil) on both sides of the ribbon heater, that is, the ribbon heating element 50 as shown in FIG. Gate fin: 60 is coupled and stacked, an auxiliary heating is formed in at least one end in the longitudinal direction of the ribbon heating element 50 and the heat radiation fin (corrugated fin: 60), the electrode terminal 72 is coupled to this electrode In the ribbon heater for an apparatus, the process of forming an electrode in the said ribbon heating element 50 is shown.

As shown in FIG. 7A, the conductive heat dissipating member 53 is bonded to the outer surface of the continuous amorphous metal alloy 52 in the form of a ribbon at a length interval of the heater, and then the conductive heat dissipating member is bonded. A continuous raw material A1 is manufactured by coating the insulating material 54 on the outer surface to which the outer surface and the conductive radiator are not bonded.

Next, as shown in Fig. 7B, the middle of the conductive heat dissipating material 53 is cut from the continuous raw material A1 along the cutting line L1 shown in Fig. 7A. A2) is prepared.

Next, as shown in Fig. 7C, the insulating terminal coated on the end of the base material A2 is removed along the cutting line L2 shown in Fig. 7B to make the electrode terminal 72 contact. When the end portion is formed, the ribbon heating element 50 on which the electrodes 50a and 50b are formed is completed.

8 is a perspective view of the ribbon heating element 50 in which the electrodes 50a and 50b are formed.

Meanwhile, as shown in FIG. 9, the conductive radiators 53 ′ may be coated on the electrodes 50a and 50b so as to cover the amorphous metal alloy 52 exposed by the cutting.

FIG. 10 is a cross-sectional view illustrating a state in which a terminal supporter and an electrode terminal are coupled to an electrode of a ribbon heating element, and FIG. 11 is a cross-sectional view of the ribbon heating element, the terminal supporter, and an electrode terminal. As shown, the heat radiation fin (corrugated fin: 160) shown in Figure 5 is in close contact with both sides in the thickness direction of the ribbon heating element 50 is fixed by an adhesive or a locking jaw (not shown), the of the ribbon heating element 50 The terminal supports 70 into which the electrode terminals 72 are inserted are fitted to the electrodes 50a and 50b at both ends in the longitudinal direction.

An insertion hole 70a is formed in the terminal support part 70 so that the electrode terminal 72 is inserted, and a locking hole 70b is inserted into the insertion hole 70a so that a locking protrusion, which will be described later, of the electrode terminal 72 is caught. It is formed in the perpendicular direction (relative to the insertion hole) so as to communicate with the middle. The electrode terminal 72 is provided with an insertion hole 72a into which the electrodes 50a and 50b are inserted, and is formed with a locking projection 72b that is fitted into the locking hole 70b. The ribbon heating element 50 of FIG. 11 has the same configuration as that of FIG.

The structure in which the terminal support part and the electrode terminal are coupled to the electrode of the ribbon heating element 50 according to the present invention is not limited to the above embodiment and may be variously modified.

According to the electrode structure and the electrode manufacturing method of the ribbon heater for auxiliary heating apparatus according to the present invention, it is possible to design and continuously produce a complicated shape, and to simplify the manufacturing process of the electrode and reduce the manufacturing cost.

Claims (3)

In the heater for the auxiliary heating device is coupled to the heat radiating fins are laminated on both sides of the heating element, the electrode is formed in at least one end in the longitudinal direction of the heat generating element and the radiating fin, The heating element is a ribbon heating element 50 coated with an insulating material 54 on the outer surface of the ribbon-shaped amorphous metal alloy 52, At the end of the ribbon heating element 50, a conductive heat dissipation member 53 is bonded to the outer surface of the amorphous metal alloy 52 so that a hot spot due to insufficient heat dissipation is not formed, thereby forming an electrode 50a. The electrode structure of the ribbon heater for the auxiliary heating device, characterized in that the insulating material is coated on the electrode (50a) leaving the end portion in contact with the electrode terminal. The method according to claim 1, The conductive radiator (53) is an electrode structure of the ribbon heater for the auxiliary heating device, characterized in that the copper foil (Cu foil). In the ribbon heater for the auxiliary heating device in which a heat radiation fin is coupled to and laminated on both sides of the ribbon heating element, an electrode is formed at least at one end in the longitudinal direction of the ribbon heating element and the heat radiation fin, and the electrode terminal is coupled to the electrode. After bonding the conductive heat dissipation member 53 to the outer surface of the continuous amorphous metal alloy 52 in the form of a ribbon (band), the outer surface and the conductive heat dissipation member is bonded After coating the insulating material 54 on the non-bonded outer surface to produce a continuous raw material (A1), After cutting the middle of the conductive heat dissipating material from the continuous raw material (A1) to prepare a base material (A2), Removing an insulating material (54) coated on the end of the base material (A2) to form an end portion in which the electrode terminal 72 is in contact with the electrode heater manufacturing method of the ribbon heater for the auxiliary heating device.

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